a person borrowed four loans four years ago(ie. from _4 to _1) with 5000 for each one at 5% per year. he want repay these loans in equall 6 payements each payment is paid every two years starting four years from now with interest rate of 6% per year, the amount of mony that must be repaied every two years is O a. 6145 O b. 6115 oc. 6130 O d. 6139 O. 6100